If you look at allear.net, you'll see photo galleries of the resorts' rooms, landscaping, pools, food courts, etc. They also have a rate and review section you can look at. Looking at Google Earth, (to me) CBR, CSR, and POR look roughly about the same size all the way around. POFQ shares buses with POR most of/some of the time, so think of that, too. You can see how close they are to each park, too. The Unofficial Guide has a chart with travel times from parks to the resorts that might help you. I don't have it handy, but that book might be good to buy.